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WYWyoming Geography
Geography overview
Wyoming occupies the 10th largest area among US states. Located in the West region, specifically the mountain subregion, its physical geography reflects its position on the North American continent. The state is landlocked with no ocean access.
Geographers typically think about a state's geography in five dimensions: location (where it is relative to other places), place (the physical and human characteristics), region (how it groups with others), movement (the flow of people, goods, and ideas), and human-environment interaction (how people have shaped and been shaped by the environment). This page touches on all five.
Topography and landforms
- Mountain ranges: rockies
- Glaciers
- Peaks above 14,000 ft ("Fourteeners")
- Part of the Great Plains
- Crossed by the Missouri River
- Contains Yellowstone National Park
Topography refers to the physical features of the land — mountains, valleys, plains, plateaus, basins. Wyoming's topography was shaped over millions of years by tectonic activity, glaciation (some of which is still active in the state), erosion, river systems, and (in some regions) volcanic activity. Understanding the topography helps explain everything from where cities developed historically (typically near reliable water sources and navigable rivers) to modern climate patterns (mountains create rain shadows, for instance).
Rivers and waterways
The Missouri River flows through Wyoming — at 2,341 miles, it is the longest river in North America.
Mountains, elevation, and relief
The rockies mountain range(s) define much of Wyoming's topography. The state has peaks rising above 14,000 ft — "Fourteeners" in the geographer's parlance. Average elevation is well above the US national average. Mountain regions create distinct climate zones, agricultural patterns, and recreation economies (skiing in winter, hiking and camping in summer).
Climate and time zone
Wyoming observes Mountain Time.
National parks and protected areas
Wyoming contains part of Yellowstone National Park, the first national park anywhere in the world (established 1872). The National Park Service manages many sites in Wyoming — national parks, national monuments, national forests, national wildlife refuges, and historic sites. Tourism, particularly to natural areas, is a major part of the state economy.
Wildlife and biodiversity
Wyoming's wildlife reflects its geography. Forests, plains, rivers, and (where applicable) coasts support a wide range of mammals, birds, fish, reptiles, and amphibians. Protected populations of native species are maintained through state and federal wildlife management agencies. State parks and refuges protect critical habitats; hunting and fishing license fees fund much of the wildlife conservation work.
Climate zones within the state
Because Wyoming is one of the largest US states, its geography varies dramatically across the state. Different regions can have completely different climates, ecosystems, and landscapes. Coastal regions (where applicable) typically have milder, more humid climates than interior areas. Mountain regions are colder and snowier. Desert regions are hot and dry.
Geology — what made Wyoming the way it is
Wyoming's present-day geography is the result of geological processes operating over hundreds of millions of years: plate tectonics, volcanic activity, glaciation, erosion, sedimentation. Most of the state's bedrock is sedimentary (limestone, sandstone, shale) or metamorphic (where heat and pressure transformed older rocks), with igneous rocks (granite, basalt) more common in mountainous areas. The last Ice Age (which ended approximately 11,000 years ago) reshaped much of the northern US and shaped lake basins, river valleys, and soil distribution.
Wyoming notable firsts
- First US state/territory to give women the right to vote (1869)
- Contains part of Yellowstone, the world's first national park (1872)
🌟 Wyoming trivia
- Wyoming was the first US state/territory to give women the right to vote (1869) — 50 years before the 19th Amendment.
- It's the least populous US state (~580k people, fewer than Washington DC).
- Yellowstone, the world's first national park, is mostly in Wyoming. The Grand Prismatic Spring there is bigger than a football field.
- The state has more pronghorn antelope than people.
Wyoming vs similar states
How does Wyoming compare with 3 other states in the same region and size category?
| State | Capital | Pop | Area rank | Admitted |
|---|---|---|---|---|
| Wyoming | Cheyenne | under 1 million | #10 | 1890 |
| Alaska | Juneau | under 1 million | #1 | 1959 |
| Arizona | Phoenix | 5 to 10 million | #6 | 1912 |
| California | Sacramento | over 10 million | #3 | 1850 |
Bordering states (6)
Wyoming shares borders with 6 other US states, listed alphabetically below. Each link goes to the dedicated state page.
Daily geography puzzle — five minutes a day
Statedoku uses physical geography (mountains, rivers, deserts, regions) as constraints. Practice your map awareness without textbooks.
Play today's puzzle →Similar states to Wyoming
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